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Re: Another power distro thread




This practice is specifically not allowed in Ontario as per document ESA SPEC-003.


4.16    Any single phase power supply shall have its load connectors connected:

a)    bond to bond direct connection only; and, b)    neutral to neutral direct connection only; and, c)    phase to line (Phase A to Line 1, Phase B to Line 2), direct connection only; and, d)    any remaining Phase “C” or third line from the load that cannot be supplied directly

from a dedicated power supply line without resort to a Tee fitting or similar device shall be capped off and remain unconnected and unenergized.

A warning label shall be provided as follows:

“WARNING” Phase “C” is not connected and not energized. Single phase source supplies only Phase “A” and “B” of three phase system.




This document is very handy.


http://eesco.ca/wp-content/uploads/2010/12/ESA-SPEC-003-R6.pdf