gfretwell...
EUSERC keeps crawling eastwards.
At some point the entire country will endorse EUSERC.
It knocks off the screwy 'cost saving' goofy solutions to Services.
Instead, the solution set is reduced to those that are entirely standard -- and SAFE.
It got started because of too many brutal fatalities -- because the crews were not aware of all of the screwy Service schemes.
Example: EUSERC abhors floating Delta Services.
Even Stinger Legs are out.
Just NOT worth it.
A couple of bucks vs killing a lineman? Forget it.
EUSERC wants but a handful of solutions -- most of them WYE for 3 phase -- and center tapped for residential.
As a result, injury rates have collapsed. It no longer takes a rocket scientist to figure out what is up with this or that Service.
EUSERC limits Services to 480 Y 277 and 208 Y 120 for commercial --
and only by exception anything else.
EUSERC is retiring 240 Delta center-tapped 240D120 Services.
This is consistent with industry moving heavy loads to 480 - -so what's the purpose of 240 3-phase power? -- No purpose at all.
Such motors are freakishly rare. You have either 200VAC 3 phase or 460VAC 3 phase -- 230 3 phase is history.
