You can legally use 240v on construction sites provided an RCD is used to protect the system. The only person that may object is the site supervisor or health and safety guy. It is in my opinion a silly rule because the transformer is 240v! And doesn't require an inline RCD so why the bother? Basically it is a rule to reduce fatal electric shocks. I have had a few shocks and lived to tell the tale!
I didn't know OSHA was such an overreach to the UK as well, I am also surprised that it doesn't have a GFCI. Edit: {( what I mean by this is that they have crazy requirements for job sites )} I am also trying to wrap my head around the center tap ground ( since everything is potted and you can't see it ) is that L+N in to the transformer primary, and center tapped to ground on the secondary essentially creating 2 phases of 120 (110-115) L1+G+L2 on the output? Edit: {( NO it is, 55V L1 (H) + 0V G/N (G) + 55V L2 (N) = 120V )}. on a side note I was pumping out a foundation in the US and needed to rearrange the extension cords when I accidentally dropped an end in to the "Lake" and it tripped the GFCI ( there called something different in the UK ). {(RCD)}. but OSHA is mandating everything be GFCI and ground bonded neutral on everything construction related in the US. so then you pick up a generator and you have to remove the ground bond before you can tie it into a house panel which is also bonded. it's madness. :Edit: and hopefully for a little more clarification/confusion Here is a bit more that I commented on the subject elsewhere. And that's what I couldn't wrap my head around, you crazy Brits. centered tapped ground/neutral for fault to line voltage of 55V vs. the US where everything neutral is bonded to ground whether at a service panel or the opposite side of a isolation? ( cannot verify that ) transformer. basically everything neutral is a "0", go through something and come out the other end and guess what has to have some reference to neutral/ground. I have a conditioning transformer, 1 loop of wire away from being an isolation transformer. ( unless you are a power company then you can do whatever you want, even if it means people are getting electrocuted in their swimming pools because of an improperly made connection up at the pole transformer, that's a different RUclips video.... ) and OSHA requires that all job sites use generators or a fixed temporary service that has neutral bonded to ground at the point of generation ( manufacturer optional unless sold as OSHA compliant ) or service entrance ( NEC code ). this makes temporary generator backup setups interesting, as it's a 50% chance one way or the other of a portable generator ( per manufacturers decision/market ) creating a double bond fault where return current can pass over the ground conductor to the generator. the solution so far from what I've been reading is to break the G+N Link on the generator and attach a ground bonding plug or switch to the generator to reestablish compliance ( either that or pull the linkage out of the service panel every time the power goes out ) or ignore it altogether. it almost makes me wonder if the 55V to ground transformer idea is what OSHA should really be doing in the 1st place? it doesn't seem like it is that difficult to do even if you start to use premise wiring, all that is needed is to be tied in to a transformer before a generator or temporary service drop. although with our fancy split phase equipment a site tie-in would probably need to be a double secondary transformer with both secondary center taps tied together with ground ( my crazy idea, copyright, I am willing to be bought out ).
The output of the transformer is 110v across the both of the phases the centre tap earth is connected to the earth wire in the mains cord on the 240v side so you only get 55v above ground its much safer than 240v above ground,GFCI's are called RCD's (Residual-current device) in the UK.
How does the circuit breaker work? My dads transformer stopped working when he accidentally tripped on a kango lead which yanked the plug out. Doesnt seem to do anything when pressing the switch. Time for a new one? Thanks
AS LONG AS THEY ARE RATED FOR 50Hz! I do not see why not as most of them are two-prong and do not require a ground, apart from the connector difference. or if your supply is 60Hz? although that is the one thing I need more information on, 50Hz appliance on 60 Hz and vice versa. ( then again I saw somebody's laptop computer on a 400 Hz socket and I don't assume it fried anything as it was still working by the end of the flight/movie. )
Ignore the other 2 clowns you are perfectly correct to add your “UK plug” socket to this and use the 110v appliance since the video demonstrates the fucking output voltage is ALSO 110v as measured by the shit quality multimeter .
Disconnect it. Measure the resistance of the primary and secondary coils. Ensure they are not infinite resistance and ensure they are not dead shorts. Easy.
that is because of the "potting compound", one of my other comments I have a link to a video of somebody explaining in diagrams which was helpful to me.
60hz equipment running on 50hz will not overheat. It will underperform. Overheating may occur if the opposite is applied.
You can legally use 240v on construction sites provided an RCD is used to protect the system. The only person that may object is the site supervisor or health and safety guy. It is in my opinion a silly rule because the transformer is 240v! And doesn't require an inline RCD so why the bother? Basically it is a rule to reduce fatal electric shocks. I have had a few shocks and lived to tell the tale!
There is no legal requirement to use 110v tools on construction sites in the U.K.
correct. condition of some insurers but not a legal requirement despite loads of people 'learning' and then repeating this shit
Interesting video. Thanks!
and I want to point, the "cable gland" installed in reverse
Standard practice... it's to stop it getting damaged being very prominent on the outside...
I didn't know OSHA was such an overreach to the UK as well, I am also surprised that it doesn't have a GFCI.
Edit: {( what I mean by this is that they have crazy requirements for job sites )}
I am also trying to wrap my head around the center tap ground ( since everything is potted and you can't see it ) is that L+N in to the transformer primary, and center tapped to ground on the secondary essentially creating 2 phases of 120 (110-115) L1+G+L2 on the output?
Edit: {( NO it is, 55V L1 (H) + 0V G/N (G) + 55V L2 (N) = 120V )}.
on a side note I was pumping out a foundation in the US and needed to rearrange the extension cords when I accidentally dropped an end in to the "Lake" and it tripped the GFCI ( there called something different in the UK ). {(RCD)}.
but OSHA is mandating everything be GFCI and ground bonded neutral on everything construction related in the US. so then you pick up a generator and you have to remove the ground bond before you can tie it into a house panel which is also bonded. it's madness.
:Edit:
and hopefully for a little more clarification/confusion Here is a bit more that I commented on the subject elsewhere.
And that's what I couldn't wrap my head around, you crazy Brits.
centered tapped ground/neutral for fault to line voltage of 55V vs. the US where everything neutral is bonded to ground whether at a service panel or the opposite side of a isolation? ( cannot verify that ) transformer. basically everything neutral is a "0", go through something and come out the other end and guess what has to have some reference to neutral/ground. I have a conditioning transformer, 1 loop of wire away from being an isolation transformer. ( unless you are a power company then you can do whatever you want, even if it means people are getting electrocuted in their swimming pools because of an improperly made connection up at the pole transformer, that's a different RUclips video.... )
and
OSHA requires that all job sites use generators or a fixed temporary service that has neutral bonded to ground at the point of generation ( manufacturer optional unless sold as OSHA compliant ) or service entrance ( NEC code ).
this makes temporary generator backup setups interesting, as it's a 50% chance one way or the other of a portable generator ( per manufacturers decision/market ) creating a double bond fault where return current can pass over the ground conductor to the generator. the solution so far from what I've been reading is to break the G+N Link on the generator and attach a ground bonding plug or switch to the generator to reestablish compliance ( either that or pull the linkage out of the service panel every time the power goes out ) or ignore it altogether.
it almost makes me wonder if the 55V to ground transformer idea is what OSHA should really be doing in the 1st place?
it doesn't seem like it is that difficult to do even if you start to use premise wiring, all that is needed is to be tied in to a transformer before a generator or temporary service drop.
although with our fancy split phase equipment a site tie-in would probably need to be a double secondary transformer with both secondary center taps tied together with ground ( my crazy idea, copyright, I am willing to be bought out ).
The output of the transformer is 110v across the both of the phases the centre tap earth is connected to the earth wire in the mains cord on the 240v side so you only get 55v above ground its much safer than 240v above ground,GFCI's are called RCD's (Residual-current device) in the UK.
How does the circuit breaker work? My dads transformer stopped working when he accidentally tripped on a kango lead which yanked the plug out. Doesnt seem to do anything when pressing the switch. Time for a new one? Thanks
Can i use power tools from america on these tip of transformer
AS LONG AS THEY ARE RATED FOR 50Hz!
I do not see why not as most of them are two-prong and do not require a ground, apart from the connector difference. or if your supply is 60Hz?
although that is the one thing I need more information on, 50Hz appliance on 60 Hz and vice versa. ( then again I saw somebody's laptop computer on a 400 Hz socket and I don't assume it fried anything as it was still working by the end of the flight/movie. )
some 60hz motors will run a little slower on 50hz.
Do you know if I can cut the plug of a deWalt jigsaw 110v and put a 3pin 240v plug on it please? Cheers x
No not at all because you would blow the moter if its not rated for 240v .
Yes you can, it is just a mechanical process. However you will not have a functioning tool after plugging it in. Don't do it.
Ignore the other 2 clowns you are perfectly correct to add your “UK plug” socket to this and use the 110v appliance since the video demonstrates the fucking output voltage is ALSO 110v as measured by the shit quality multimeter .
I need to rewire one of these from scratch. All wires have been disconnected. Help would be appreciated.
How would I multitest a transformer like the one in vid? Thanks
Disconnect it.
Measure the resistance of the primary and secondary coils. Ensure they are not infinite resistance and ensure they are not dead shorts.
Easy.
Can I plug a Clarke air cam110 into one of theas
Hi can I take 240v tools to the USA would this work ?
No thay use 120v so 240v power tools that use brushed AC moters would run at half speed.
I'm thinking that you really shouldn't be opening that up. Qualified service technicians only.
i repair them at work.
Mine has a short, someone cut out the safety switch in what I think is a effort of trouble shooting. Any tips in fault finding?
yer check the resistance of the output, if the windings ar shorted or burrnt out its scrap.
Bollocks. Take off the top
Whys it so god dam heavy?
Iron.
You can make a voltage doubler rectifier to use a 240-volt drill charger on a building site
ruclips.net/video/QBl9h_v7hYM/видео.html
How is that a look inside ? It is simply not.
that is because of the "potting compound", one of my other comments I have a link to a video of somebody explaining in diagrams which was helpful to me.
Misleading title
No it isn't - He showed what was inside - The main transformer was embedded in epoxy, which is why it was not visible.