arkiesparky
Member
I'm trying to locate the code reference that tells me I can't put line side conductors in the same raceway/wireway (read gutter) as the load side conductors.
HELP!!!
HELP!!!
Line Side and Load Side Conductors
- Thread starter arkiesparky
- Start date
- Status
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Re: Line Side and Load Side Conductors
Are these service entrance conductors? 230.7 would prohibit them in the same raceway. Feeder and/or branch circuit conductors can be in the same raceway.
[ May 05, 2005, 12:40 PM: Message edited by: infinity ]
Are these service entrance conductors? 230.7 would prohibit them in the same raceway. Feeder and/or branch circuit conductors can be in the same raceway.
[ May 05, 2005, 12:40 PM: Message edited by: infinity ]
arkiesparky
Member
Re: Line Side and Load Side Conductors
Thanks....I knew it was in there, but I couldn't remember where. I kept looking in 300.
Thanks again.
Thanks....I knew it was in there, but I couldn't remember where. I kept looking in 300.
Thanks again.
Re: Line Side and Load Side Conductors
There are also a lot of Public Utility Commission and electrical utility regulations that prohibit having metered and unmetered conductors in the same raceway, wireway, or cable.
Since a meter switch that is ahead of a metering and a service switch is not itself a service switch then you could have line and load conductors in the same nipple. In fact, this would be a good way to distinguish a meter switch from a service switch. There are some states such a Nebraska that require that 480 volts and 600 volts be shut off before changing meters or servicing current transformers and so forth. Also, on high capacity 120Y208 volts you also need a meter switch with current limiting fuses such as with urban seconadry networks. The jaw spacing in meter sockets is just not adequate for 480 volts or high short circuit capacity 120Y208 volts.
There have been some instances, particularly on 480 volts where a powere supply in an electronic meter has exploded when energized. There are some proposed new meter forms with 1 or 2 extra prongs so that the meter power supply can be on a separate 120 volt power source, such as an extra voltage transformer.
There are also a lot of Public Utility Commission and electrical utility regulations that prohibit having metered and unmetered conductors in the same raceway, wireway, or cable.
Since a meter switch that is ahead of a metering and a service switch is not itself a service switch then you could have line and load conductors in the same nipple. In fact, this would be a good way to distinguish a meter switch from a service switch. There are some states such a Nebraska that require that 480 volts and 600 volts be shut off before changing meters or servicing current transformers and so forth. Also, on high capacity 120Y208 volts you also need a meter switch with current limiting fuses such as with urban seconadry networks. The jaw spacing in meter sockets is just not adequate for 480 volts or high short circuit capacity 120Y208 volts.
There have been some instances, particularly on 480 volts where a powere supply in an electronic meter has exploded when energized. There are some proposed new meter forms with 1 or 2 extra prongs so that the meter power supply can be on a separate 120 volt power source, such as an extra voltage transformer.
- Location
- Bremerton, Washington
Re: Line Side and Load Side Conductors
Our POCO prohibits "meter loops". This has to be a POCO rule as the meter line and load are both unfused conductors so not subject to 230.7
Our POCO prohibits "meter loops". This has to be a POCO rule as the meter line and load are both unfused conductors so not subject to 230.7
charlie
Senior Member
- Location
- Indianapolis
Re: Line Side and Load Side Conductors
I have never heard of meter loops but we have the same rules. We even go so far as to require that line and load do not cross except in self contained meter fittings.
I have never heard of meter loops but we have the same rules. We even go so far as to require that line and load do not cross except in self contained meter fittings.
- Status