Well yes but ECM mag says most SP have slash ratings ? Thats why a single pole 240 volt breaker the one in my post is better than using a 2 pole 120 /240 volt due to the line to ground issue .
Slash rating the lower number is line to ground fault the higher number is line to line fault so a breaker with one rating would be better for a high leg at 208 volts .http://ecmweb.com/mag/electric_understanding_circuit_breaker/ do you agree or is there something i missed ?
...some (many?) are because, IIRC, code permits using two single pole breakers for a two-pole load... but many (some?) are not slash rated.Well 4th paragraph down last line single pole breakers are always slash rated...
This is my recommendation.Two words:
sub panel
PS: The ones that are not slash rated cannot be used to supply two-pole loads in most general-use cases....some (many?) are because, IIRC, code permits using two single pole breakers for a two-pole load... but many (some?) are not slash rated.
It is always best to look at several reference sources.Well 4th paragraph down last line single pole breakers are always slash rated
guess Ecm mag is giving out bad info .
MarkyMark,
I'll bet 10 years down the road, you will still be known as the Electrician who used the
'Wild Leg' for the lights.
For those who care. It looks like I am caught in a battle of semantics when it comes to 1-pole breakers and slash ratings.It is always best to look at several reference sources.
I have just looked at Schneider Electric, Eaton, and Siemens 'loadcenter' breakers, they are all listed as 'for use on 120/240V systems'.
It's apparent that nobody expects a high-leg-to-neutral connection to ever be made. ~ Capt. Obvious"This labeling describes the type of electrical system it is designed for. The single pole breaker does not have a rating for a 240Vac system. The single pole breaker would attach to one phase of a 120/240Vac system which would be 120Vac."
No, in fact some of their other FAQs clearly spell out that a fully rated breaker can be connected to the 208V leg.It's apparent that nobody expects a high-leg-to-neutral connection to ever be made. ~ Capt. Obvious
Did they mean 1p breakers?No, in fact some of their other FAQs clearly spell out that a fully rated breaker can be connected to the 208V leg.
If you can find a fully rated 208V 1-pole breaker you can use it. You will probably not find one in the standard QO, CH, BL or QP type of 'loadcenter' breaker. These are 120V rated and listed for use on 120/240V systems.Did they mean 1p breakers?