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SEG Solar SEG-420-BTD-BG

Brand
SEG Solar
Model
SEG-420-BTD-BG
SKU / part number
SEG-420-BTD-BG[1]
Category
Solar panels
chargedreviews.com/panels/seg-solar-seg-420-btd-bg

Electrical at STC

Rated output (STC)420 W[1]Provisional
Module efficiency21.51 %[1]Provisional
Voltage at max power (Vmp)31.9 V[1]Provisional
Current at max power (Imp)13.17 A[1]Provisional
Open-circuit voltage (Voc)38.5 V[1]Provisional
Short-circuit current (Isc)13.83 A[1]Provisional
Power tolerance?

Temperature and system limits

Temperature coefficient, Pmax-0.3 %/°C[1]Provisional
Temperature coefficient, Voc-0.25 %/°C[3]
Temperature coefficient, Isc?
Maximum system voltage1,500 V[1]Provisional
Maximum series fuse?
NOCT / NMOT?
Rated output at NMOT?
Operating temperature?

Cells and construction

Cell technologyN-Type[1]Provisional
Cell count?
BifacialYes[1]Provisional
Bifaciality?
FrameBlack anodized aluminium alloy[3]
Front glass2.0 mm AR coating semi-tempered glass[3]
Back cover2.0 mm Semi-tempered glass[3]
Panel format?

Mechanical and connections

Dimensions30 D × 1,134 W × 1,722 L mm[1]Provisional
Weight24 kg / 52.91 lb[2]
Connectors?
Cable length?
Junction box rating?
Mounting?
Design load, front?
Design load, rear?

Installation (from the manual)

Torque

Clamp or bolt torque16 to 20 N·m(141.61 to 177.01 in-lb*)[4]

Clearances and orientation

Mounting methods and clamp zonesScrew installation (Table 2): Four outer mounting holes, +5400/-2400 Pa; Clamp installation (Table 3), clamp length ≥50mm, Mounting rail cross the long side, L=A/4±50mm: +5400/-2400 Pa; Clamp installation (Table 3), clamp length ≥50mm, Mounting rail parallel the long side, L=A/4±50mm: +2400/-2400 Pa; Clamp installation (Table 3), clamp length ≥50mm, Mounting rail cross the short side, W=B/4±50mm: +3600/-2400 Pa; Clamp installation (Table 3), clamp length ≥50mm, Mounting rail parallel the short side, W=B/4±50mm: +1600/-1600 Pa[4]

Grounding

GroundingA bonding or toothed washer is required to make proper and reliable electrical grounding connection with the anodized aluminum frame.; Consider using a lay-in lug, rated for outdoor use, if the module grounding conductor is to be larger than 10 AWG.[4]

Not in the manual: Conductors

Page 1 of 2 · Installation values · ? means nothing is recordedAggregated, often community-reported information, not official documentation. Do not rely on it for installation, purchase or compliance decisions; always confirm values with the manufacturer’s official documentation. Charged Reviews accepts no responsibility for errors.

Charged Reviews · Quick reference

SEG Solar SEG-420-BTD-BG · SEG-420-BTD-BG

Warranty

Product warranty?
Power warranty term?
First-year degradation?
Minimum output in year 1, as printed?
Annual degradation after year one?
Warranted final output?
Coverage conditions?
Remedy?
Labor and shipping?
Transfer to another owner?

Certifications and listings

UL 61730?
UL 1703?
IEC 61215?
IEC 61730?
IEC 62804?
CEC listing?
CECClaimedListed when checked[5]

Documents and sources

  1. SEG Solar 420W 108 Half-Cell N-Type Black Bifacial Solar Panel, SEG-420-BTD-BGDistributor product page · Revised Not stated · Checked https://www.greentechrenewables.com/product/seg-solar-420w-108-half-cell-n-type-black-bifacial-solar-panel-seg-420-btd-bg
  2. SEG-420-BTD-BG · DatasheetDistributor datasheet · Revised Not stated · Checked https://cdn.myced.com/images/Products/ZZ0000/ZZ3098/00000/ZZ309800015_DS.pdf
  3. ViewOfficial datasheet · Revised Not stated · Checked https://cdn.myced.com/images/Products/ZZ0000/ZZ3098/00000/ZZ309800015_DS.pdf
  4. SEG Solar Installation Guide, Photovoltaic Module (Double-glass) (U.S. UL 61730 edition, 2026 V1.1)Official installation manual · Revision 2026 V1.1 · Revised March 2026 · Checked https://www.segsolar.com/Public/Uploads/uploadfile/files/20260326/SEGInstallationManualBGEN.pdf
  5. CEC PV Module List, official spreadsheet (data unchanged since October 1, 2026; downloaded October 11, 2026)Issuer record · Revised October 1, 2026 · Checked https://solarequipment.energy.ca.gov/Home/DownloadtoExcel?filename=PVModuleList